linux( sudo bmon ) 流量监控工具----类似于 moniter interface

sudo bmon

monitor bandwidth interface eth0  （vyos 把 bmon 的linux 改为 了 moniter interface 了，底层还是调用的 bmon）

Linux:~$ sudo bmon -h
bmon 3.5
Copyright (C) 2001-2013 by Thomas Graf <tgraf@suug.ch>
Copyright (C) 2013 Red Hat, Inc.
bmon comes with ABSOLUTELY NO WARRANTY. This is free software, and you
are welcome to redistribute it under certain conditions. See the source
code for details.

Usage: bmon [OPTION]...

Options:
Startup:
   -i, --input=MODPARM             Input module(s)
   -o, --output=MODPARM            Output module(s)
   -f, --configfile=PATH           Alternative path to configuration file
   -h, --help                      Show this help text
   -V, --version                   Show version

Input:
   -p, --policy=POLICY             Element display policy (see below)
   -a, --show-all                  Show all elements (even disabled elements)
   -r, --read-interval=FLOAT       Read interval in seconds (float)
   -R, --rate-interval=FLOAT       Rate interval in seconds (float)
   -s, --sleep-interval=FLOAT      Sleep time in seconds (float)
   -L, --lifetime=LIFETIME         Lifetime of an element in seconds (float)

Output:
   -U, --use-si                    Use SI units
   -b, --use-bit                   Display in bits instead of bytes

Module configuration:
   modparm := MODULE:optlist,MODULE:optlist,...
   optlist := option;option;...
   option  := TYPE[=VALUE]

   Examples:
       -o curses:ngraph=2
       -o list            # Shows a list of available modules
       -o curses:help     # Shows a help text for html module

Interface selection:
   policy  := [!]simple_regexp,[!]simple_regexp,...

   Example: -p 'eth*,lo*,!eth1'

Please see the bmon(1) man pages for full documentation.
Linux:~$